Heat-Strengthened Glass

Heat-Strengthened Glass

Characteristics of the product

Heat-strengthened Glass is produced through the same procedure as tempered glass by using the same level of heat, yet it is slowly cooled down, hence tension of heat-strengthened glass is less than that of tempered glass. This makes it less strong and less durable towards temperature compared to tempered glass. Heat-strengthened glass has no weakness in terms of self-breakage like in the case of tempered glass as less tension occurred in the glass. Breakage will not be in grains but in bigger pieces, and its fracture will run towards the edge of glass instead. Even though the durability of heat-strengthened glass is less than tempered glass endurance, it is still can tolerate pressure and forces in the stage of adequate for glass fitting. Glass types that can be manufactured to heat-strengthened glass are similar to the kinds of tempered glass

Advantages

1. 2 times stronger than float glass, allowing it to be capable of withstanding crash, pressure, and squeeze.
2. High-temperature resistance up to 290 ºC without breaking.
3. Tolerates acute temperature changes up to 100 ºC.
4. Its cracks will run into the edge of the glass when it’s broken. Number of cracks are handful, their cracks are larger than general glass and pieces of broken glass are large.
5. No spontaneous breakage as the case of tempered glass.

Disadvantages

1. Heat-strengthened glass cannot be cut, pierced, and chipped off.
2. As heat-strengthened glass has been exposed to high temperature during the production, the material becomes soft. Despite the fact that we exercise caution when moving glass inside the oven, there is still slightly wave and deflection. If required entirely smooth with no waves on glass such as the case of glass for photocopy machine, other types of glass are required.
3. Heat-strengthened glass cannot substitute tempered glass due to less force reception towards crashing, pressing, and squeezing forces. The fact that heat-strengthened glass will break into large pieces could cause an unexpected severe harm in case there is no glass frame.

Application

Heat-strengthened glass receives crashing, pressing, and squeezing forces better than ordinary glass. In some areas that are unnecessary to withstand high crashing, pressing, and squeezing forces, heat-strengthened glass is recommended in order to avoid spontaneous breakage of tempered glass. Glass selection should be made based on calculation whether heat-strengthened glass can withstand forces in that specific place or not since heat-strengthened glass can endure less forces than tempered glass does. Another concern is when it is broken due to unexpected causes, the glass will fall over and cause any severe dangers or not.